建筑钢结构进展2012，Vol.14Issue(5)：10-20,11.
脱层材料与槽接式挫屈束制支撑的性能研究
Experimental Investigations of Unbonding Layers and Welded End-Slot Connection for Buckling Restrained Braces
摘要
Abstract
Unbonding material is one of the most important constituents in a buckling restrained brace (BRB). In this paper, a method for estimating the eompressive strength adjustment factor for any given brace core strain is presented. Experimental investigations using four BRBs are conducted to examine the efficiency of four different unbonding materials in reducing the difference between the cyclic eompressive and tensile strengths. Test results indicate that the chloroprene rubber is easy to install and effective in minimizing the strength differences between the cyclic peak compression and tension forces. The excellent performance of the welded end-slot buckling restrained brace (WES-BRB) is then illustrated through cyclic loading tests of three full-scale BRB components. It includes the test results of a 12.5 m long jumbo WES-BRB. Its peak eompressive strength exceeded f6 800 kN and the maximum core strain reached 0. 035. All WES-BRB specimens showed satisfactory performance with a very stable hysteretie response, very predictable axial stiffness, and sustained a cumulative plastic deformation greater than 400 times the yield deformation.关键词
挫屈束制支撑/耐震设计/阻尼器/能量消散/脱层材料Key words
buckling restrained brace/ seismic design/ hysteretie damper/ energy dissipation/ unbonding material分类
建筑与水利引用本文复制引用
蔡克铨,魏志毓,吴安杰,林保均..脱层材料与槽接式挫屈束制支撑的性能研究[J].建筑钢结构进展,2012,14(5):10-20,11.基金项目
高科技厂房之耐震性能改善技术研究(NSC100-2625-M-002-011) （NSC100-2625-M-002-011）
